REGIOCHEMICAL CONTROL IN THE 1,2-CARBONYL TRANSPOSITION OF α,α′-DIMETHYLENE SYSTEMS THROUGH REGIOSELECTIVE SULFENYLATION OF TOSYLHYDRAZONE DIANIONS
作者:Tetsuya Mimura、Takeshi Nakai
DOI:10.1246/cl.1980.931
日期:1980.8.5
The regiochemical outcomes are described in the 1,2-carbonyl shift of α,α′-dimethylene systems which relies upon the regioselective sulfenylation of tosylhydrazone dianions leading to the enol thioethers of transposed ketones. Notably, a high regiospecificity was obtained with β-methyl- and β,β-dimethylcyclohexanone without any attempts to separate the stereoisomers of the hydrazones.
Syntheses in the Terpene Series. VI.<sup>1</sup> Synthesis of 10-Methyl-1-decalone. The Stereochemical Stability Relationship in the 9-Methyldecalin Series
作者:Franz Sondheimer、David Rosenthal
DOI:10.1021/ja01548a048
日期:1958.8
Total Synthesis of (±)-Scopadulcic Acid B
作者:Larry E. Overman、Daniel J. Ricca、Vinh D. Tran
DOI:10.1021/ja972427k
日期:1997.12.17
The first total synthesis of a scopadulan diterpene is described. The key step is a double Heck cyclization of dienyl aryl iodide 8 to form tetracyclic enones 24 and 25 in 80-85% combined yield.
Wenkert,E. et al., Synthetic Communications, 1973, vol. 3, p. 205 - 209